Cadillac 2005 STS gets new set of V-LED backup lights. These light bulbs use 1/4 the power of the originals but with 92 6K LEDs per bulb it looks like a new set ...
replaced your backup bulbs? did you buy the right kind? they should just work. bulbs like the small wedge style have to be put in one way to make them work but the backup bulbs only fit one way. may want to connect them to a battery tester if they are not lighting and the original bulbs do still work.